A Low Power 5.8-GHz ISM-Band Intermodulation Radar System for Target Motion Discrimination
A Low Power 5.8-GHz ISM-Band Intermodulation Radar System for Target Motion Discrimination
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DOI：
10.1109/jsen.2019.2926189
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发表时间：
2019-10-15
影响因子：
4.3
通讯作者：
Li, Changzhi
中科院分区：
文献类型：
--
作者：
Mishra, Ashish;Li, Changzhi
本文讨论了5.8 GHz工业、科学和医学(ISM)频段的交调雷达接收机和非线性标签的设计和测试。为了区分目标产生的三阶互调频率的反射和杂波反射的基音，接收机被设计成衰减基频反射并放大由非线性目标产生的低三阶音。这种非线性标签设计在一种可穿戴的柔性基板上。实验中使用了两种类型的目标，即非线性标签和金属反射器。通过各种实验验证了该雷达的杂波抑制能力，即在多种杂波存在的情况下对人体目标进行机械运动和生命体征检测。本文对四个实验进行了记录和分析。并对测试结果进行了分析，验证了该互调雷达的杂波抑制能力。
This paper discusses the design and test of an intermodulation radar receiver and a nonlinear tag operating in the 5.8-GHz industrial, scientific, and medical (ISM) band. To discriminate reflections of the target-generated 3rd-order intermodulation frequencies from the clutter-reflected fundamental tones, the receiver was designed to attenuate the fundamental reflections and amplify the lower 3rd -order tone generated by the nonlinear target. The nonlinear tag was designed on a flexible substrate for wearable applications. Experiments were performed with two types of targets, i.e., the nonlinear tag and a metal reflector. Various experiments were performed to demonstrate the clutter rejection capability of the radar, i.e., mechanical motion and vital sign detection of a human target in the presence of multiple clutter. Four experiments were recorded and analyzed in this paper. The results were recorded and analyzed to demonstrate the clutter noise rejection capability of the intermodulation radar.